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FIX: Workaround for integer hashing #8982

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Merged
merged 1 commit into from
Dec 6, 2014
Merged

FIX: Workaround for integer hashing #8982

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14 changes: 5 additions & 9 deletions pandas/io/stata.py
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Original file line number Diff line number Diff line change
Expand Up @@ -611,9 +611,10 @@ class StataMissingValue(StringMixin):
MISSING_VALUES = {}
bases = (101, 32741, 2147483621)
for b in bases:
MISSING_VALUES[b] = '.'
# Conversion to long to avoid hash issues on 32 bit platforms #8968
MISSING_VALUES[compat.long(b)] = '.'
for i in range(1, 27):
MISSING_VALUES[i + b] = '.' + chr(96 + i)
MISSING_VALUES[compat.long(i + b)] = '.' + chr(96 + i)

float32_base = b'\x00\x00\x00\x7f'
increment = struct.unpack('<i', b'\x00\x08\x00\x00')[0]
Expand Down Expand Up @@ -643,6 +644,8 @@ class StataMissingValue(StringMixin):

def __init__(self, value):
self._value = value
# Conversion to long to avoid hash issues on 32 bit platforms #8968
value = compat.long(value) if value < 2147483648 else float(value)
self._str = self.MISSING_VALUES[value]

string = property(lambda self: self._str,
Expand Down Expand Up @@ -1375,13 +1378,6 @@ def _pad_bytes(name, length):
return name + "\x00" * (length - len(name))


def _default_names(nvar):
"""
Returns default Stata names v1, v2, ... vnvar
"""
return ["v%d" % i for i in range(1, nvar+1)]


def _convert_datetime_to_stata_type(fmt):
"""
Converts from one of the stata date formats to a type in TYPE_MAP
Expand Down